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performing operations (330) 330
transporting (330) 330
physics (211) 211
human necessities (158) 158
measuring (119) 119
testing (119) 119
blasting (105) 105
heating (105) 105
lighting (105) 105
mechanical engineering (105) 105
weapons (105) 105
agriculture (99) 99
animal husbandry (98) 98
fishing (98) 98
forestry (98) 98
hunting (98) 98
trapping (98) 98
electricity (84) 84
chemistry (76) 76
metallurgy (76) 76
fixed constructions (69) 69
physical or chemical processes or apparatus in general (67) 67
conveying (53) 53
handling thin or filamentary material (53) 53
packing (53) 53
storing (53) 53
separation (47) 47
textiles (45) 45
calculating (43) 43
computing (43) 43
counting (43) 43
machine tools (43) 43
metal-working not otherwise provided for (43) 43
cultivation of vegetables, flowers, rice, fruit, vines, hopsor seaweed (42) 42
horticulture (42) 42
science & technology (42) 42
watering (42) 42
hygiene (38) 38
medical or veterinary science (38) 38
engineering elements and units (35) 35
general measures for producing and maintaining effectivefunctioning of machines or installations (35) 35
thermal insulation in general (35) 35
investigating or analysing materials by determining theirchemical or physical properties (33) 33
humans (31) 31
life sciences & biomedicine (31) 31
conversion or distribution of electric power (28) 28
electric communication technique (28) 28
electric digital data processing (28) 28
generation (28) 28
treatment of water, waste water, sewage, or sludge (27) 27
measuring electric variables (24) 24
measuring magnetic variables (24) 24
earth drilling (22) 22
mining (22) 22
basic electric elements (21) 21
advertising (20) 20
cryptography (20) 20
display (20) 20
education (20) 20
fertilising (20) 20
mechanical metal-working without essentially removingmaterial (20) 20
planting (20) 20
pneumatic tube conveyors (20) 20
punching metal (20) 20
seals (20) 20
shop conveyor systems (20) 20
sowing (20) 20
transport or storage devices, e.g. conveyors for loading ortipping (20) 20
earth drilling, e.g. deep drilling (19) 19
gene expression (19) 19
natural or artificial threads or fibres (19) 19
obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (19) 19
ranges (19) 19
spinning (19) 19
ventilating (19) 19
产量 (19) 19
appliances for teaching, or communicating with, the blind,deaf or mute (18) 18
diagrams (18) 18
educational or demonstration appliances (18) 18
general tagging of cross-sectional technologies spanning over several sections of the ipc (18) 18
general tagging of new technological developments (18) 18
globes (18) 18
planetaria (18) 18
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (18) 18
technologies or applications for mitigation or adaptation againstclimate change (18) 18
cleaning (17) 17
cleaning in general (17) 17
prevention of fouling in general (17) 17
combinations or associations of metal-working machines, notdirected to a particular result (16) 16
details, components, or accessories for machine tools, e.g.arrangements for copying or controlling (16) 16
fertilisers (16) 16
handling thin or filamentary material, e.g. sheets, webs,cables (16) 16
machine tools in general characterised by the construction ofparticular details or components (16) 16
manufacture thereof (16) 16
separating solids from solids (16) 16
sorting (16) 16
biocides, e.g. as disinfectants, as pesticides, as herbicides (15) 15
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